20856903

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1\times {\mathrm{727}}^1$

素因数の和:934

約数の個数: 16

約数和(自身を含む): 28444416

約数和(自身を除く): 7587513

約数列:

[1, 3, 73, 131, 219, 393, 727, 2181, 9563, 28689, 53071, 95237, 159213, 285711, 6952301, 20856903]

約数ペア:

[(1, 20856903), (3, 6952301), (73, 285711), (131, 159213), (219, 95237), (393, 53071), (727, 28689), (2181, 9563)]